<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Methods - transactions management: GNOME Data Access 5 manual</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.79.1">
<link rel="home" href="index.html" title="GNOME Data Access 5 manual">
<link rel="up" href="libgda-provider-class.html" title="Virtual methods for providers">
<link rel="prev" href="ch44s05.html" title="Methods - DDL queries">
<link rel="next" href="ch44s07.html" title="Methods - DML queries">
<meta name="generator" content="GTK-Doc V1.32 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts"></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="libgda-provider-class.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="ch44s05.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="ch44s07.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="sect1">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="id-1.9.7.10"></a>Methods - transactions management</h2></div></div></div>
<p>
      When a connection has been opened and no transaction has been started, then the provider should execute queries in
      auto commit mode.
    </p>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.3"></a>begin_transaction()</h3></div></div></div>
<p>
	This method starts a new transaction.
      </p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.4"></a>commit_transaction()</h3></div></div></div>
<p>
	This method commits the current transaction.
      </p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.5"></a>rollback_transaction()</h3></div></div></div>
<p>
	This method cancels the current transaction.
      </p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.6"></a>add_savepoint()</h3></div></div></div>
<p>
	This method adds a save point to the current transaction, which allows for partial rollbacks within transactions.
      </p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.7"></a>rollback_savepoint()</h3></div></div></div>
<p>
	This method rolls back to a previously defined save point within the current transaction.
      </p>
</div>
<div class="sect2">
<div class="titlepage"><div><div><h3 class="title">
<a name="id-1.9.7.10.8"></a>delete_savepoint()</h3></div></div></div>
<p>
	This method deletes a previously defined save point within the current transaction, it does not affect the
	transaction but it simply won't be possible to roll back to the savepoint afterwards.
      </p>
</div>
</div>
<div class="footer">
<hr>Generated by GTK-Doc V1.32</div>
</body>
</html>